Multi-hop Data Transportation with WSM Protocol in Vehicular Ad-hoc Network

Nowadays, the wireless communication in vehicular environment is a hot topic in automotive industry. Some communication standards and protocols have been published to support the data transportation between vehicle and vehicle and between vehicle and infrastructure, which is a big challenge due to the special characteristics of vehicular ad-hoc network. In this project, we implement a hybrid stack that combines WAVE Short Message Protocol (WSMP) with a recently developed protocol – the Reactive, Density-aware Timely Dissemination protocol (REACT-DIS). The project will evaluate the performance based on its throughput, goodput and packet loss ratio by using NS3 simulation tool. Furthermore, we develop an enhanced approach that combines the REACT-DIS protocol with the limited acknowledgement to improve the performance of data dissemination in the system. The improvement of new approach also minimizes the impacting range of last hopping so that only the space near the final receiver will be impacted by the last hopping and the bandwidth of other area is not interfered. The new approach is implemented and evaluated using NS3 network simulator as well. Simulation results demonstrate that the enhanced approach outperforms the REACT-DIS protocol in an environment with low or mid density but is not ideal in high density environment.